Hi Luiz, Thanks for your reply! This is beyond my knowledge. By guessing I looked into the D-Bus system- in the system bus, so if you mean under org.bluez /org/bluez/hci0/dev_XX_XX_XX_XX_XX_XX/org.bluez.MediaControl1/Player, that property is not set, so I think there is no registration. I would come back to you and this issue if I experienced another time. I changed something, deactivated the MPRIS proxy systemd service. Regards, Tobias Luiz Augusto von Dentz <luiz.dentz@xxxxxxxxx> schrieb / wrote / a écrit / ha escrito / je pisao / је писао: > Hi Tobias, > > On Fri, Feb 26, 2021 at 7:17 AM Tobias S. Predel > <tobias.predel@xxxxxxxxx> wrote: > > > > Dear all, > > > > I experienced a SEGFAULT from bluez 5.56-1 > > on Arch Linux - linux 5.11.1.arch1-1: > > > > It happened during having A2DP connection with pipewire-git 0.3.22.76.g08445d2c-1. > > > > This is the backtrace: > > > > # coredumpctl debug > > (gdb) thread apply all bt > > > > Thread 1 (Thread 0x7fb8325f67c0 (LWP 663)): > > #0 0x00007fb832c74f19 in __strcasecmp_l_avx () from /usr/lib/libc.so.6 > > #1 0x000055d78e38c3b1 in play_status_to_val (status=0x0) at profiles/audio/avrcp.c:729 > > #2 0x000055d78e38ce3e in avrcp_player_event (player=player@entry=0x55d78f058a20, id=<optimized out>, data=data@entry=0x0) at profiles/audio/avrcp.c:807 > > #3 0x000055d78e38ced6 in avrcp_player_event (data=0x0, id=<optimized out>, player=0x55d78f058a20) at profiles/audio/avrcp.c:783 > > #4 notify_addressed_player_changed (user_data=user_data@entry=0x55d78f058a20) at profiles/audio/avrcp.c:1804 > > #5 0x000055d78e3906ad in avrcp_unregister_player (player=0x55d78f058a20) at profiles/audio/avrcp.c:4452 > > This looks like it is related to AVRCP not A2DP, does pipewire > register a player? > > > #6 0x000055d78e3830c8 in media_player_remove (data=0x55d78f050ff0) at profiles/audio/media.c:1052 > > #7 unregister_player (conn=<optimized out>, msg=0x55d78f0079d0, data=<optimized out>) at profiles/audio/media.c:1902 > > #8 0x000055d78e404fe9 in process_message (connection=0x55d78f005e00, message=0x55d78f0079d0, method=0x55d78e47b778 <media_methods+120>, iface_user_data=<optimized out>) at gdbus/object.c:246 > > #9 0x00007fb832df17d6 in ?? () from /usr/lib/libdbus-1.so.3 > > #10 0x00007fb832de13bd in dbus_connection_dispatch () from /usr/lib/libdbus-1.so.3 > > #11 0x000055d78e401681 in message_dispatch (data=0x55d78f005e00) at gdbus/mainloop.c:59 > > #12 0x00007fb832e72b84 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0 > > #13 0x00007fb832ec6c21 in ?? () from /usr/lib/libglib-2.0.so.0 > > #14 0x00007fb832e720d3 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0 > > #15 0x000055d78e41acc6 in mainloop_run () at src/shared/mainloop-glib.c:66 > > #16 0x000055d78e41b148 in mainloop_run_with_signal (func=func@entry=0x55d78e3acf70 <signal_callback>, user_data=user_data@entry=0x0) at src/shared/mainloop-notify.c:188 > > #17 0x000055d78e36fac0 in main (argc=<optimized out>, argv=<optimized out>) at src/main.c:1084 > > > > Regards, > > Tobias Predel > > -- > > La perfection est atteinte, non pas lorsqu'il n'y a plus rien à ajouter, > > mais lorsqu'il n'y a plus rien à retirer. — Antoine de Saint-Exupéry > > > > -- > Luiz Augusto von Dentz